Method and system for automatically determining commands for a network element

• US 8,190,723 B2
• Filed: 12/14/2004
• Issued: 05/29/2012
• Est. Priority Date: 12/14/2003
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Datla, Krishnam, Beereddy, Srinivasa, Vengalam, Praveen
• Primary Examiner(s): Fan, Hua
• Application Number:
  US11/012,885
• Publication Number:
  US 20050195738A1
• Time in Patent Office: 2,723 Days
• Field of Search: 709/223
• US Class Current: 709/223
• CPC Class Codes: H04L 41/022 Multivendor or multi-standard integration
• CPC Class Codes: H04L 41/0226 Mapping or translating multiple network management protocols

Abstract

A method of automatically determining a set of commands that a network device supports comprises the machine-implemented steps of receiving a syntax definition for a command help syntax of a network device; sending a seed command to the network device; receiving and storing a response from the network device; creating and storing information identifying commands that the network device supports, based on the response, in a database of command knowledge; determining and sending to the network device one or more command requests that cause the network device to respond with further information defining supported commands; creating and storing further information identifying additional commands or parameters supported by the network device, based on responses from the network device to the command requests, in the database; and repeating the determining, sending, creating and storing steps until the information in the database represents all commands and parameters that the network device supports.

Claims

1. A method comprising machine-implemented steps of:

receiving a syntax information for a command help syntax of a network device;

sending a seed command to the network device;

receiving and storing a response from the network device;

creating and storing information identifying a set of commands that the network device supports, based on the response, in a database of command knowledge;

repeating the following steps (i) through (iii) for each command of the set of commands that the network device supports until the information in the database represents all commands and parameters that the network device supports;

(i) determining and sending to the network device one or more command requests containing the each command that cause the network device to respond with additional information defining supported commands, said one or more command requests include a valid Internet Protocol (IP) address for an interface of a wireless access point in response to determining that said each command allows configuring the interface;

(ii) creating and storing additional information identifying additional commands or parameters supported by the network device, based on responses from the network device to the one or more command requests, in the database; and

(iii) upon determining that a first set of additional information received in response to a first command request containing the each command is the same as a second set of additional information received in response to a second command request containing the each command, wherein the second command request includes a parameter from the first set of additional information, performing the steps of (a) storing in the database of command knowledge information that indicates that an unlimited parameter list exists for the each command; and

(b) discontinuing the repeating for the each command;

detecting a response that indicates when a previously issued command has caused the network device to change command context; and

storing information defining subsequent commands and parameters in a different context in the database of command knowledge,

wherein the machine-implemented steps are performed by one or more computing devices comprising one or more processors.

2. A method as recited in claim 1, wherein the seed command is any of a help command and a “

?”

command.

3. A method as recited in claim 1, wherein the syntax information identifies, for a particular network device type, a command that causes the network device to respond with a list of all commands supported by that particular network device type.

4. A method as recited in claim 1, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command is missing a required parameter.

5. A method as recited in claim 1, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command is missing a required sub-command.

6. A method as recited in claim 1, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command included a parameter having an incorrect format.

7. A computer system comprising:

a non-transitory computer-readable storage medium having recorded thereon a syntax information for a command help syntax of a network device, a seed command, and a special case handling logic;

wherein the special case handling logic comprises instructions for handling exceptions to general rules defined in the command help syntax;

an auto-learning framework that is communicatively coupled to the non-transitory computer-readable storage medium and comprising a request generator and a response handler; and

a database of command knowledge;

wherein the auto-learning framework comprises one or more sequences of instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of;

receiving a syntax information for a command help syntax of a network device;

sending a seed command to the network device;

receiving and storing a response from the network device;

creating and storing information identifying a set of commands that the network device supports, based on the response, in a database of command knowledge;

repeating the following steps (i) through (iii) for each command of the set of commands that the network device supports until the information in the database represents all commands and parameters that the network device supports;

(i) determining and sending to the network device one or more command requests containing the each command that cause the network device to respond with additional information defining supported commands, said one or more command requests include a valid Internet Protocol (IP) address for an interface of a wireless access point in response to determining that said each command allows configuring the interface;

(ii) creating and storing additional information identifying additional commands or parameters supported by the network device, based on responses from the network device to the one or more command requests, in the database; and

(iii) upon determining that a first set of additional information received in response to a first command request containing the each command is the same as a second set of additional information received in response to a second command request containing the each command, wherein the second command request includes a parameter from the first set of additional information, performing the steps of (a) storing in the database of command knowledge information that indicates that an unlimited parameter list exists for the each command; and

(b) discontinuing the repeating for the each command;

detecting a response that indicates when a previously issued command has caused the network device to change command context; and

storing information defining subsequent commands and parameters in a different context in the database of command knowledge.

8. A computer system as recited in claim 7, wherein the seed command is any of a help command and a “

?”

command.

9. A computer system as recited in claim 7, wherein the syntax information identifies, for a particular network device type, a command that causes the network device to respond with a list of all commands supported by that particular network device type.

10. A computer system as recited in claim 7, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command is missing a required parameter.

11. A computer system as recited in claim 7, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command is missing a required sub-command.

12. A computer system as recited in claim 7, wherein the syntax information identifies, for a particular network device type, a response that indicates when a previously issued command included a parameter having an incorrect format.

13. A non-transitory computer-readable storage medium storing one or more sequences of instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of:

receiving a syntax information for a command help syntax of a network device;

sending a seed command to the network device;

receiving and storing a response from the network device;

creating and storing information identifying a set of commands that the network device supports, based on the response, in a database of command knowledge;

repeating the following steps (i) through (iii) for each command of the set of commands that the network device supports until the information in the database represents all commands and parameters that the network device supports;

(i) determining and sending to the network device one or more command requests containing the each command that cause the network device to respond with additional information defining supported commands, said one or more command requests include a valid Internet Protocol (IP) address for an interface of a wireless access point in response to determining that said each command allows configuring the interface;

(ii) creating and storing additional information identifying additional commands or parameters supported by the network device, based on responses from the network device to the one or more command requests, in the database; and

(iii) upon determining that a first set of additional information received in response to a first command request containing the each command is the same as a second set of additional information received in response to a second command request containing the each command, wherein the second command request includes a parameter from the first set of additional information, performing the steps of (a) storing in the database of command knowledge information that indicates that an unlimited parameter list exists for the each command; and

(b) discontinuing the repeating for the each command;

detecting a response that indicates when a previously issued command has caused the network device to change command context; and

storing information defining subsequent commands and parameters in a different context in the database of command knowledge;

wherein the machine-implemented steps are performed by one or more computing devices comprising one or more processors.

14. A non-transitory computer-readable storage medium as recited in claim 13, wherein the seed command is any of a help command and a “

?”

command.

15. A non-transitory computer-readable storage medium as recited in claim 13, wherein the syntax information identifies, for a particular network device type, any of:

(a) a command that causes the network device to respond with a list of all commands supported by that particular network device type;

(b) a response that indicates when a previously issued command is missing a required parameter;

(c) a response that indicates when a previously issued command is missing a required sub-command;

(d) a response that indicates when a previously issued command included a parameter having an incorrect format.